.page-faq {
  --faq-gap: clamp(1.75rem, 4vw, 3rem);
  color: var(--ink);
  padding-bottom: clamp(3rem, 7vw, 6rem);
}

.page-faq .breadcrumbs {
  margin: clamp(1.25rem, 3vw, 2rem) 0 clamp(1.5rem, 3vw, 2.25rem);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: 1.25rem;
  padding: clamp(1.5rem, 4vw, 2.75rem);
  border: 1px solid var(--hairline-strong);
  border-left: 4px solid var(--orange);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(244, 231, 211, .9), rgba(252, 251, 247, .95) 62%);
  box-shadow: var(--shadow-micro);
}

.page-faq .faq-hero h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.85rem, 5.2vw, 3.4rem);
  line-height: 1.14;
  letter-spacing: -.015em;
  margin: 0;
  max-width: 20ch;
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(1rem, 1.4vw, 1.0625rem);
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: .5rem 0 0;
  padding: 1.25rem 0 0;
  border-top: 1px solid var(--hairline);
  display: grid;
  gap: 1rem 1.5rem;
  grid-template-columns: 1fr;
}

.page-faq .faq-fact {
  display: grid;
  gap: .15rem;
}

.page-faq .faq-fact__num {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--orange-deep);
  line-height: 1;
}

.page-faq .faq-fact__label {
  font-size: .875rem;
  color: var(--ink-mute);
  line-height: 1.5;
}

/* ---------- 章节通用 ---------- */
.page-faq .faq-section {
  margin-top: var(--faq-gap);
  padding-top: clamp(1.5rem, 3vw, 2.25rem);
  border-top: 1px solid var(--hairline);
}

.page-faq .faq-section__head {
  display: grid;
  gap: .75rem;
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
}

.page-faq .faq-section__head h2 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.5rem, 3.6vw, 2.35rem);
  line-height: 1.2;
  letter-spacing: -.01em;
  margin: 0;
}

.page-faq .faq-section__intro {
  margin: 0;
  max-width: 66ch;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* ---------- 图片 ---------- */
.page-faq .faq-media {
  margin: 0;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--sand);
}

.page-faq .faq-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-media--wide {
  margin-bottom: clamp(1.75rem, 4vw, 2.75rem);
}

.page-faq .faq-media--wide img {
  aspect-ratio: 16 / 9;
}

.page-faq .faq-media--tall img {
  aspect-ratio: 3 / 2;
}

.page-faq .faq-media__cap {
  padding: .75rem 1rem;
  font-size: .8125rem;
  line-height: 1.6;
  color: var(--ink-mute);
  border-top: 1px solid var(--hairline);
  background: var(--snow);
}

/* ---------- 时间轴 ---------- */
.page-faq .faq-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 2.25rem;
  position: relative;
  display: grid;
  gap: 1.25rem;
}

.page-faq .faq-timeline::before {
  content: "";
  position: absolute;
  left: .5rem;
  top: .9rem;
  bottom: .9rem;
  width: 1px;
  background: var(--hairline-strong);
}

.page-faq .faq-timeline__item {
  position: relative;
  padding: 1.25rem 1.25rem 1.35rem;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: var(--snow);
  box-shadow: var(--shadow-micro);
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease), transform .25s var(--ease);
}

.page-faq .faq-timeline__item:hover,
.page-faq .faq-timeline__item:focus-within {
  border-color: var(--orange);
  box-shadow: var(--shadow-lift);
  transform: translateY(-2px);
}

.page-faq .faq-timeline__marker {
  position: absolute;
  left: calc(-2.25rem + .5rem - 5px);
  top: 1.75rem;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--snow);
  border: 2px solid var(--orange);
  transition: background-color .25s var(--ease), border-color .25s var(--ease);
}

.page-faq .faq-timeline__item:hover .faq-timeline__marker {
  background: var(--orange);
}

.page-faq .faq-timeline__phase {
  display: block;
  font-size: .75rem;
  letter-spacing: .14em;
  color: var(--ink-mute);
  margin: 0 0 .5rem;
}

.page-faq .faq-timeline__title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.0625rem, 2.2vw, 1.25rem);
  line-height: 1.35;
  margin: 0 0 .6rem;
}

.page-faq .faq-timeline__body > p {
  margin: 0 0 .85rem;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-faq .faq-timeline__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .45rem;
}

.page-faq .faq-timeline__list li {
  position: relative;
  padding-left: 1.1rem;
  font-size: .875rem;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-faq .faq-timeline__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 6px;
  height: 6px;
  border-radius: 1px;
  background: var(--lime);
}

/* ---------- 协作流程 ---------- */
.page-faq .faq-flow {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.25rem);
}

.page-faq .faq-flow__steps {
  display: grid;
  gap: 1rem;
}

.page-faq .faq-flow__step {
  padding: 1.25rem;
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius);
  background: var(--paper);
  transition: border-color .25s var(--ease), background-color .25s var(--ease);
}

.page-faq .faq-flow__step:hover {
  border-left-color: var(--violet);
  background: rgba(244, 231, 211, .45);
}

.page-faq .faq-flow__time {
  margin: 0 0 .4rem;
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--ink-mute);
}

.page-faq .faq-flow__step h3 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.0625rem;
  line-height: 1.4;
  margin: 0 0 .45rem;
}

.page-faq .faq-flow__step p {
  margin: 0 0 .85rem;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-faq .faq-tag {
  display: inline-block;
  padding: .2rem .6rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .06em;
  border: 1px solid var(--hairline-strong);
  border-radius: 999px;
  color: var(--ink-soft);
  background: var(--snow);
}

.page-faq .faq-tag--lime {
  color: var(--green-deep);
  border-color: var(--lime);
  background: rgba(168, 216, 46, .16);
}

.page-faq .faq-tag--orange {
  color: var(--orange-deep);
  border-color: var(--orange);
  background: rgba(242, 106, 46, .12);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-qa {
  border-top: 1px solid var(--hairline-strong);
}

.page-faq .faq-qa__item {
  border-bottom: 1px solid var(--hairline);
}

.page-faq .faq-qa__q {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.1rem .25rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1rem, 2vw, 1.125rem);
  line-height: 1.5;
  color: var(--ink);
  transition: color .2s var(--ease);
}

.page-faq .faq-qa__q::-webkit-details-marker {
  display: none;
}

.page-faq .faq-qa__q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 1.15rem;
  line-height: 1.4;
  color: var(--orange);
  transition: transform .2s var(--ease), color .2s var(--ease);
}

.page-faq .faq-qa__item[open] .faq-qa__q::after {
  content: "–";
  color: var(--orange-deep);
}

.page-faq .faq-qa__q:hover {
  color: var(--orange-deep);
}

.page-faq .faq-qa__a {
  padding: 0 2.5rem 1.2rem .25rem;
}

.page-faq .faq-qa__a p {
  margin: 0;
  max-width: 66ch;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------- 比价清单 ---------- */
.page-faq .faq-check {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .75rem;
}

.page-faq .faq-check__item {
  display: flex;
  gap: .9rem;
  align-items: flex-start;
  padding: 1.1rem 1.15rem;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: var(--snow);
  transition: border-color .25s var(--ease), background-color .25s var(--ease);
}

.page-faq .faq-check__item:hover {
  border-color: var(--lime);
  background: rgba(244, 231, 211, .4);
}

.page-faq .faq-check__box {
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: .3rem;
  border: 1px solid var(--hairline-strong);
  border-radius: 2px;
  background: var(--snow);
  position: relative;
  transition: border-color .25s var(--ease), background-color .25s var(--ease);
}

.page-faq .faq-check__item:hover .faq-check__box {
  border-color: var(--green-deep);
  background: var(--lime);
}

.page-faq .faq-check__body h3 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1rem;
  line-height: 1.45;
  margin: 0 0 .3rem;
}

.page-faq .faq-check__body p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.72;
  color: var(--ink-soft);
}

/* ---------- 下一步 ---------- */
.page-faq .faq-next {
  margin-top: var(--faq-gap);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius);
  background: var(--charcoal);
  color: var(--snow);
  box-shadow: var(--shadow-lift);
}

.page-faq .faq-next .eyebrow {
  color: rgba(252, 251, 247, .6);
}

.page-faq .faq-next__head {
  display: grid;
  gap: .6rem;
  margin-bottom: 1.5rem;
}

.page-faq .faq-next__head h2 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.35rem, 3.2vw, 2rem);
  line-height: 1.22;
  margin: 0;
  color: var(--snow);
}

.page-faq .faq-next__cards {
  display: grid;
  gap: 1rem;
}

.page-faq .faq-next__card {
  display: grid;
  gap: .5rem;
  padding: 1.25rem;
  border: 1px solid var(--hairline-dark);
  border-radius: var(--radius);
  background: rgba(252, 251, 247, .05);
  color: var(--snow);
  text-decoration: none;
  transition: border-color .25s var(--ease), background-color .25s var(--ease), transform .25s var(--ease);
}

.page-faq .faq-next__card:hover,
.page-faq .faq-next__card:focus-visible {
  border-color: var(--orange);
  background: rgba(242, 106, 46, .14);
  transform: translateY(-2px);
}

.page-faq .faq-next__kicker {
  margin: 0;
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--lime);
}

.page-faq .faq-next__card h3 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.125rem;
  line-height: 1.4;
  margin: 0;
  color: var(--snow);
}

.page-faq .faq-next__card p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.72;
  color: var(--on-dark);
}

.page-faq .faq-next__go {
  justify-self: start;
  margin-top: .35rem;
  font-size: .875rem;
  font-weight: 700;
  color: var(--snow);
  background-image: linear-gradient(var(--orange), var(--orange));
  background-repeat: no-repeat;
  background-size: 0% 1px;
  background-position: 0 100%;
  transition: background-size .3s var(--ease);
}

.page-faq .faq-next__card:hover .faq-next__go,
.page-faq .faq-next__card:focus-visible .faq-next__go {
  background-size: 100% 1px;
}

.page-faq .faq-next__aside {
  margin: 1.5rem 0 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--hairline-dark);
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--on-dark);
}

.page-faq .faq-next__aside a {
  color: var(--snow);
  text-decoration: underline;
  text-decoration-color: var(--orange);
  text-underline-offset: 3px;
  transition: color .2s var(--ease);
}

.page-faq .faq-next__aside a:hover {
  color: var(--lime);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-flow__steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-next__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-flow {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
  }

  .page-faq .faq-flow__steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-media--tall {
    position: sticky;
    top: 1.5rem;
  }

  .page-faq .faq-check {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .85rem;
  }

  .page-faq .faq-check__item:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 619px) {
  .page-faq .faq-timeline {
    padding-left: 1.5rem;
  }

  .page-faq .faq-timeline::before {
    left: .3rem;
  }

  .page-faq .faq-timeline__marker {
    left: calc(-1.5rem + .3rem - 5px);
  }

  .page-faq .faq-qa__a {
    padding-right: .25rem;
  }

  .page-faq .faq-flow__step,
  .page-faq .faq-check__item,
  .page-faq .faq-timeline__item {
    padding: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    transition-duration: .01ms !important;
  }
}